SRX稳定级配碎石的稳定性能评价  

Stability Evaluation of SRX Stabilized Graded Crushed Stone

作　　者：孙连忠 郭宏伟 陈峙峰 韩愈 陈忠达[4] SUN Lianzhong;GUO Hongwei;CHEN Zhifeng;HAN Yu;CHEN Zhongda(Henan Hongsheng Engineering Supervision Co.,Ltd.,Henan Zhoukou 466000;Highway Survey and Design Institute of Zhoukou,Henan Zhoukou 466000;Foshan Railway Investment and Construction Group Co.,Ltd.,Guangdong Foshan 528000;Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064)

机构地区：[1]河南宏盛工程监理有限公司,河南周口466000 [2]周口市公路勘察设计院,河南周口466000 [3]佛山市铁路投资建设集团有限公司,广东佛山528000 [4]长安大学特殊地区公路工程教育部重点实验室,西安710064

出　　处：《公路交通技术》2022年第3期27-32,共6页Technology of Highway and Transport

基　　金：浙江省交通科技项目(2013H18)。

摘　　要：为探究SRX在增强级配碎石稳定性能方面的效果,分别采用温缩试验、干湿循环试验、冻融循环试验来分析评价其温缩性能、水稳定性能及冻稳定性能。试验结果表明:SRX稳定级配碎石具有良好的温缩性能,其温缩系数较其他路用材料的小,仅为水泥稳定碎石的15%左右,且受SRX稳定剂掺量的影响较小;SRX稳定级配碎石具有良好的水稳定性能,经4次干湿循环后,强度损失率仅为4%左右;SRX稳定级配碎石的冻稳定性能经5次冻融循环后,强度损失率约为42%,但随SRX稳定剂掺量的增加,其冻稳定性能有所改善。To explore the effect of SRX on enhancing the stability of graded crushed stone,the temperature shrinkage test,dry-wet cycle test and freeze-thaw cycle test were carried out to analyze and evaluate the temperature shrinkage performance,water stability and freezing stability.The results illustrate that SRX stabilized graded crushed stone has good temperature shrinkage performance,its temperature shrinkage coefficient is far less than that of other road materials,only about 15% of that of cement stabilized crushed stone,and it is less influenced by the dosage of SRX stabilizer.The SRX stabilized graded crushed stone has good water stability,whose strength loss rate is only about 4% after four dry-wet cycles.The freezing stability of SSGCS is not very satisfied,and the strength loss rate of SRX stabilized graded crushed stone is about 42% after five freeze-thaw cycles;but its freezing stability improved with the increase of the dosage of SRX stabilizer.

关 键 词：SRX稳定级配碎石 温缩性能 水稳定性能 冻稳定性能 强度损失率 

分 类 号：U414[交通运输工程—道路与铁道工程]